openapi: 3.0.3
info: { title: Teacher API, version: 1.0.0 }
servers: [ { url: https://your-domain.com/api/v1 } ]
tags: [ { name: Teachers } ]
security: [ { bearerAuth: [] } ]

paths:
  /teachers:
    get:
      tags: [Teachers]
      summary: List teachers
      parameters:
        - in: query
          name: page
          schema: { type: integer, default: 1 }
        - in: query
          name: per_page
          schema: { type: integer, default: 20 }
      responses:
        "200": { description: Teachers retrieved }

  /teachers/{id}:
    get:
      tags: [Teachers]
      summary: Get teacher by ID
      parameters:
        - in: path
          name: id
          required: true
          schema: { type: integer }
      responses:
        "200": { description: Teacher profile }
        "404": { description: Not found }

  /teachers/{id}/classes:
    get:
      tags: [Teachers]
      summary: Get teacher class assignments
      parameters:
        - in: path
          name: id
          required: true
          schema: { type: integer }
      responses:
        "200": { description: Class assignments }